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Use of a Broken or Risky Cryptographic Algorithm Affecting java-1.7.0-openjdk-demo package, versions <1:1.7.0.85-2.6.1.2.el7_1

Severity

 Recommended
critical

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
97.36% (100th percentile)

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  • Snyk IDSNYK-RHEL7-JAVA170OPENJDKDEMO-4566785
  • published26 Jul 2021
  • disclosed20 May 2015
Report a new vulnerability Found a mistake?

Introduced: 20 May 2015

CVE-2015-4000  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade RHEL:7 java-1.7.0-openjdk-demo to version 1:1.7.0.85-2.6.1.2.el7_1 or higher.
This issue was patched in RHSA-2015:1229.

NVD Description

Note: Versions mentioned in the description apply only to the upstream java-1.7.0-openjdk-demo package and not the java-1.7.0-openjdk-demo package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.

References